Trying to get casperjs running on Ubuntu 12.04. After installing it when I run I get:
09:20 $ ll /usr/local/bin/casperjs
lrwxrwxrwx 1 root root 26 Nov 6 16:49 /usr/local/bin/casperjs -> /opt/casperjs/bin/casperjs
09:20 $ /usr/bin/env python --version
Python 2.7.3
09:20 $ cat /opt/casperjs/bin/casperjs | head -4
#!/usr/bin/env python
import os
import sys
09:20 $ casperjs
: No such file or directory
09: 22 $ python
Python 2.7.3 (default, Sep 26 2013, 20:03:06)
[GCC 4.6.3] on linux2
So Python is present and runnable, casperjs is pointing to the right place and it is a python script. But when I run it I get "No such file".
I can fix it by changing the first line of the casperjs python file from:
#!/usr/bin/env python
to:
#!/usr/bin/python
Result:
$ casperjs --version
1.1.0-DEV
I managed to fix it, but I'm wondering why it didn't work with #!/usr/bin/env python, since that seems to be a normal interpreter line. Do I have something configured wrong?
Here are the steps to get casperjs:
$ git clone git://github.com/n1k0/casperjs.git
$ cd casperjs
$ ln -sf `pwd`/bin/casperjs /usr/local/bin/casperjs
$ casperjs
: No such file or directory
Best Answer
If you see the error “: No such file or directory” (with nothing before the colon), it means that your shebang line has a carriage return at the end, presumably because it was edited under Windows (which uses CR,LF as a line separator). The CR character causes the cursor to move back to the beginning of the line after the shell prints the beginning of the message and so you only get to see the part after CR which ends the interpreter string that's part of the error message.
Remove the CR: the shebang line needs to have a Unix line ending (linefeed only). Python itself allows CRLF line endings, so the CR characters on other lines don't hurt. Shell scripts on the other hand must be free of CR characters.
To remove the Windows line endings, you can use dos2unix:
or sed:
If you must edit scripts under Windows, use an editor that copes with Unix line endings (i.e. something less brain-dead than Notepad) and make sure that it's configured to write Unix line endings (i.e. LF only) when editing a Unix file.